GB1208154A - Improvements in or relating to acoustical transducers - Google Patents

Improvements in or relating to acoustical transducers

Info

Publication number
GB1208154A
GB1208154A GB714068A GB714068A GB1208154A GB 1208154 A GB1208154 A GB 1208154A GB 714068 A GB714068 A GB 714068A GB 714068 A GB714068 A GB 714068A GB 1208154 A GB1208154 A GB 1208154A
Authority
GB
United Kingdom
Prior art keywords
disc
alternatively
polarization
case
piezo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB714068A
Other languages
English (en)
Inventor
Richard Frank Mitchell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Components Ltd
Original Assignee
Mullard Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mullard Ltd filed Critical Mullard Ltd
Priority to GB714068A priority Critical patent/GB1208154A/en
Priority to DE19691906080 priority patent/DE1906080A1/de
Priority to FR6903282A priority patent/FR2001797A1/fr
Publication of GB1208154A publication Critical patent/GB1208154A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/178—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator of a laminated structure of multiple piezoelectric layers with inner electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB714068A 1968-02-13 1968-02-13 Improvements in or relating to acoustical transducers Expired GB1208154A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB714068A GB1208154A (en) 1968-02-13 1968-02-13 Improvements in or relating to acoustical transducers
DE19691906080 DE1906080A1 (de) 1968-02-13 1969-02-07 Elektroakustischer Wandler
FR6903282A FR2001797A1 (enrdf_load_html_response) 1968-02-13 1969-02-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB714068A GB1208154A (en) 1968-02-13 1968-02-13 Improvements in or relating to acoustical transducers

Publications (1)

Publication Number Publication Date
GB1208154A true GB1208154A (en) 1970-10-07

Family

ID=9827382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB714068A Expired GB1208154A (en) 1968-02-13 1968-02-13 Improvements in or relating to acoustical transducers

Country Status (3)

Country Link
DE (1) DE1906080A1 (enrdf_load_html_response)
FR (1) FR2001797A1 (enrdf_load_html_response)
GB (1) GB1208154A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787407A (zh) * 2018-05-31 2018-11-13 河南理工大学 单激励匹配式变螺旋纵-扭复合超声振动加工方法及装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498405A1 (fr) * 1981-01-16 1982-07-23 Thomson Csf Hydrophone a lame piezoelectrique mince
JPS5999900A (ja) 1982-11-29 1984-06-08 Toshiba Corp 超音波探触子

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787407A (zh) * 2018-05-31 2018-11-13 河南理工大学 单激励匹配式变螺旋纵-扭复合超声振动加工方法及装置
CN108787407B (zh) * 2018-05-31 2023-08-18 河南理工大学 单激励匹配式变螺旋纵-扭复合超声振动加工方法及装置

Also Published As

Publication number Publication date
DE1906080A1 (de) 1969-09-11
FR2001797A1 (enrdf_load_html_response) 1969-10-03

Similar Documents

Publication Publication Date Title
Skinner et al. Flexible composite transducers
US4401956A (en) Electronically variable time delay in piezoelectric media
Sato et al. Dependence of the electromechanical coupling coefficient on the width‐to‐thickness ratio of plank‐shaped piezoelectric transducers used for electronically scanned ultrasound diagnostic systems
US3384768A (en) Piezoelectric resonator
US2895061A (en) Piezoelectric sandwich transducer
Yamamoto et al. Electrical and physical properties of repoled PMN–PT single-crystal sliver transducer
GB1208154A (en) Improvements in or relating to acoustical transducers
Lee et al. Plane harmonic waves in an infinite piezoelectric plate with dissipation
US2669666A (en) Piezoelectric transducer
Ikeda The internal friction of barium titanate ceramics
Tiersten Electromechanical coupling factors and fundamental material constants of thickness vibrating piezoelectric plates
DE112017003939B4 (de) Durchstimmbare Lithiumniobatresonatoren und -filter mittels Lithiierung und Delithiierung
US4224548A (en) Singly rotated cut of Y-axis boule lead potassium niobate, Pb2 KNb.sub. O15, for surface acoustic wave applications
Khan et al. Piezoelectric coupling factor calculations for plates of langatate driven in simple thickness modes by lateral-field-excitation
US4707631A (en) Isotropic acoustic wave substrate
DE112020006201T5 (de) Resonatorstruktur zur Massenerfassung
US3440550A (en) Zinc oxide maximum efficiency transverse wave crystals and devices
GB641469A (en) Improved piezoelectric crystals
Yang et al. Effects of Piezoelectric Coupling on Bechmann's number for thickness-twish waves in a plate of hexagonal crystals
US4224549A (en) Lead potassium niobate substrate member for surface acoustic wave applications
JPS6153562A (ja) 超音波探触子
CA1263473A (en) Isotropic acoustic wave substrate
RU2686492C1 (ru) Чувствительный элемент из пьезокомпозита связности 1-3 и способ его изготовления
US3354425A (en) Transducing method and apparatus
Ramos et al. Electromechanical properties of laminated piezoelectric composites

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees